Collated Nails and Staples

The single decision that makes or breaks a fastening job isn’t the brand on the box. It’s matching the fastener type, leg length, and finish to the material and the moisture it’ll see. Get that right and you avoid jams, split trim, weak holds, and rust streaks bleeding down siding two winters later. Get it wrong and you’re pulling fasteners out of cracked molding.

For broader project planning, explore WBC’s building materials resources.

Here’s the plain version. Collated nails and staples come in distinct types — brad nails, pin nails, finish nails, and staples — each with a gauge and head built for a specific job. The lighter the gauge number, the heavier the fastener. Pick the type for the application, the length for the material thickness, and the finish for the exposure. That’s the whole game.

Fastener Types and Where Each One Belongs

Brad nails are the workhorse of trim work. These are small 18-gauge nails up to 2 inches long, used for general repairs, trim and molding, finish carpentry, flooring, and picture framing. Because they’re thinner in cross section, they’re less likely to split decorative molding and leave a very small hole. That tiny 1/8-inch head makes the nail less visible in wood — which is exactly what you want on case molding, base molding, window casing, and cabinets.

Pin nails go smaller still. At 23-gauge and headless, they’re the most delicate fastener in the lineup — built for fine trim and detail work where the hole has to disappear entirely. They run in short lengths from 3/8 inch up to 1 inch.

Finish nails are the heavier option, in 15- or 16-gauge, when a brad won’t hold enough. More steel means more holding power for trim that takes stress.

Staples carry load differently. Electro-galvanized steel staples handle light-duty to heavy-duty jobs and are made for attaching insulation, window screening, upholstering, carpet padding, and fence wiring. The flat crown spreads the hold across sheet goods and fabric instead of pinpointing it like a nail.

Fastener	Gauge	Head/Crown	Best For
Pin nail	23	Headless	Delicate trim, invisible holes
Brad nail	18	~1/8” small head	Trim, casing, cabinets, picture framing
Finish nail	15–16	Finish head	Higher-stress trim, more holding power
Staple (T50 type)	18	Flat crown	Insulation, housewrap, screening, carpet pad, fencing

On the brad side, common lengths cover the full range of trim work. Western Building Center carries Stinger collated nails in 2000-count packs and Stinger staple packs in 7/8-inch and 1-1/4-inch. The Arrow brad nail line runs in 2”, 1-1/2”, 1-1/4”, 1”, 3/4”, and 5/8” lengths, plus a 9/16-inch PowerShot brad. Pin nails come in 3/8”, 1/2”, 5/8”, 13/16”, and 1” lengths in 1000-count.

Sizing the Leg and Crown So It Actually Holds

Length is where most people go wrong. Too long and the fastener punches through or stands proud. Too short and it won’t hold. The general nail rule: length should run roughly three times the thickness of the material you’re fastening down.

Staples have their own rule. Aim for 3/16 to 1/4 inch of the staple to penetrate the base material — and you can push that to about 3/8 inch in softwoods. If the staple stands away from the surface, step down to a shorter leg length. A stand-away staple means the leg bottomed out before the crown seated. Shorter leg fixes it.

T50-type staples run from 1/4 inch up to 9/16 inch leg length. Crown width follows the material: narrow crowns for delicate fabric and light insulation, wider crowns up to 9/16 inch for thicker or rigid sheet goods. Western Building Center also carries wide-crown options — a Duo-Fast 1/2-inch wide crown staple and Rapid A11 3/8-inch staples among them.

Point type matters on the longer staples too. Chisel points drive straight and penetrate softwoods; divergent points twist for better holding power in hardwoods.

Finish: The Decision That Decides Whether It Rusts

This is the part Montana builders can’t skip. Freeze-thaw cycling and spring snowmelt punish anything that holds moisture, and a rusting fastener telegraphs straight through finish work and siding.

Match the finish to the exposure:

• Standard steel — dry interior, light-duty only. It corrodes fast in a damp basement or any exterior spot. Keep it indoors and dry.
• Galvanized (zinc-coated) steel — the general-purpose pick for indoor work and damp or outdoor projects. Electro-galvanized staples cover everything from insulation to fence wiring, and the coating gives solid rust resistance. Steel construction here is rust- and corrosion-resistant for both indoor and outdoor applications.
• Stainless steel — types 304 and 316, with 316 the highest corrosion resistance. This is the call for high-moisture, marine, or coastal environments where you need to prevent rust and the staining that comes with it. For exterior trim and high-moisture work, stainless earns its keep.
• Plastic-coated — made for electrical wiring, where the non-conductive coating matters more than holding power.

For Montana cold-climate builds, the practical breakdown is straightforward. Housewrap and insulation stapling calls for galvanized wide-crown staples that hold sheet goods against wind and weather. Exterior and high-moisture work calls for stainless 304 or 316. And bare steel stays where it belongs — dry, interior, out of the weather.

Matching Fastener to Tool

A fastener only works in the tool it was built for. Confirm collation and gauge before you buy bulk, or you’ll be clearing jams instead of working.

T50-type staples use a 34-degree collation angle. Verify your gun is rated for it — a T20 or T60 staple will jam or misfire in a T50 tool. The Arrow brad line is designed to run in Arrow tools like the PT18G pneumatic brad nailer, the ET200BN electric brad nailer, the T50HS staple and nail gun, and the 5-in-1 staple and nail guns — check your tool to confirm size compatibility before loading. Western Building Center carries the Arrow T50RED manual staple gun and the Arrow T55BL staple gun on the tool side.

Pneumatic brad nailers typically run between 60 and 100 PSI, and 18-gauge brad nailers — manual, electric, or pneumatic — drive the 5/8-inch through 2-inch brads.

Two habits save material every time: test on scrap first, and keep fasteners back from the material edge to avoid splitting. Bulk packs run from 1,000 up to 5,000 count, so dialing in the setting before you commit to the real piece pays off fast.

Frequently Asked Questions

What’s the difference between a brad nail and a pin nail? Gauge and head. A brad nail is 18-gauge with a small head around 1/8 inch and runs up to 2 inches long — strong enough for trim, casing, and cabinets while still leaving a small hole. A pin nail is 23-gauge and headless, the most delicate option, used for fine trim where the hole has to be invisible. Brads hold better; pins hide better.

How long should a staple be? Long enough that 3/16 to 1/4 inch of the leg penetrates the base material — up to about 3/8 inch in softwoods. If the staple stands away from the surface instead of seating flush, the leg is too long for that material. Step down to the next shorter leg length.

Galvanized or stainless for outdoor work in Montana? Galvanized handles damp and general outdoor projects with good rust resistance. For high-moisture exposure where rust staining can’t be tolerated, go stainless — 304 or 316, with 316 offering the highest corrosion resistance. Bare steel stays indoors and dry; it corrodes quickly once it sees moisture.

Will any staple fit my staple gun? No. T50-type staples use a 34-degree collation angle, and the gun has to be T50-rated. Load a T20 or T60 staple in a T50 tool and it’ll jam or misfire. Always confirm the gauge and collation match your tool before buying in bulk.

What finish should I use for stapling electrical wiring? Plastic-coated staples are made for electrical wiring and cable management, where the non-conductive coating matters. For insulation, housewrap, screening, and fencing, galvanized steel is the general-purpose choice.